Pacific Amphitheatre, located on the grounds of the Orange County Fair & Event Center has hosted performances by some of the finest artists of America. Some past artists that have performed here include Jessica Simpson, Hillary Duff, Madonna and several other noteworthy artists. This makes Pacific Amphitheater the most sought after venue in the Orange County region. With a seating capacity of 8500, it is advisable to book tickets well in advance. For further details, check their website.